Lightbulbs

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 100 watt incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

Pink incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

Bulbrite pink incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

Damaged General Electric Co. incandescent light bulbs sit in a box in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 60 watt "Reveal" incandescent light bulbs sit in a box in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. 60 watt "Reveal" incandescent light bulbs sit in a box in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

A General Electric Co. 26 watt compact flourescent light bulb is displayed for a photograph with 100 watt incandescent light bulbs in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. The 26 watt compact flourescent bulb emits the same amount of light as a 100 watt incandescent bulb. Photographer: Daniel Acker/Bloomberg

Scott Paddack, operations manager, works near a pallate of General Electric Co. light bulbs in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg *** Local Caption *** Scott Paddack

General Electric Co. incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

A box of General Electric Co. incandescent light bulbs is displayed for a photograph in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

Boxes of Sylvania 100 watt Incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

General Electric Co. incandescent light bulbs sit on a shelf in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

An illustrated incandescent light bulb appears on the side of a box of Westinghouse light bulbs in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg

A Westinghouse 100 watt incandescent light bulb sits in a box in the warehouse of Kennedy Webster Electric Co. in Downers Grove, Illinois, U.S., on Tuesday, July 19, 2011. Photographer: Daniel Acker/Bloomberg